LT1498/LT1499
10MHz, 6V/µs, Dual/Quad
Rail-to-Rail Input and Output
Precision C-Load Op Amps
FEATURES
DESCRIPTION
The LT®1498/LT1499 are dual/quad, rail-to-rail input and
output precision C-Load™ op amps with a 10MHz gain-
bandwidth product and a 6V/μs slew rate.
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Rail-to-Rail Input and Output
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–
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475μV Max V from V to V
OS
Gain-Bandwidth Product: 10MHz
Slew Rate: 6V/μs
The LT1498/LT1499 are designed to maximize input
dynamic range by delivering precision performance over
the full supply voltage. Using a patented technique, both
input stages of the LT1498/LT1499 are trimmed, one at
the negative supply and the other at the positive supply.
Theresultingguaranteedcommonmoderejectionismuch
better than other rail-to-rail input op amps. When used as
a unity-gain buffer in front of single supply 12-bit A-to-D
converters, the LT1498/LT1499 are guaranteed to add less
than 1LSB of error even in single 3V supply systems.
Low Supply Current per Amplifier: 1.7mA
Input Offset Current: 65nA Max
Input Bias Current: 650nA Max
Open-Loop Gain: 1000V/mV Min
Low Input Noise Voltage: 12nV/√Hz Typ
Wide Supply Range: 2.2V to 15V
Large Output Drive Current: 30mA
Stable for Capacitive Loads Up to 10,000pF
Dual in 8-Pin PDIP and SO Package
Quad in Narrow 14-Pin SO
With 110dB of supply rejection, the LT1498/LT1499 main-
tain their performance over a supply range of 2.2V to 36V
and are specified for 3V, 5V and 15V supplies. The inputs
canbedrivenbeyondthesupplieswithoutdamageorphase
reversal of the output. These op amps remain stable while
driving capacitive loads up to 10,000pF.
APPLICATIONS
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Driving A-to-D Converters
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Active Filters
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Rail-to-Rail Buffer Amplifiers
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Low Voltage Signal Processing
The LT1498 is available with the standard dual op amp
configurationin8-pinPDIPandSOpackaging.TheLT1499
features the standard quad op amp configuration and is
available in a 14-pin plastic SO package. These devices
can be used as plug-in replacements for many standard
op amps to improve input/output range and precision.
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Battery-Powered Systems
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and C-Load
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
TYPICAL APPLICATION
Frequency Response
10
V
V
= 2.7V
P-P
= 3V
IN
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
+
Single Supply 100kHz 4th Order Butterworth Filter
6.81k
11.3k
100pF
5.23k
10.2k
47pF
6.81k
–
+
V
V
IN
5.23k
–
330pF
1/2 LT1498
+
1000pF
V
OUT
1/2 LT1498
+
+
1498 TA01
V /2
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
1498 TA02
14989fe
1